Structural optimization of the excavator boom under extreme working conditions using EDEM-ADAMS coupled simulation

Area of Science:

• Mechanical Engineering
• Computational Engineering
• Robotics

Background:

• Backhoe loaders face extreme dynamic and uncertain loading conditions.
• Structural integrity is critical for safety and performance in excavating machinery.

Purpose of the Study:

• To propose a structural optimization method for backhoe loader booms using EDEM-ADAMS.
• To enhance the structural strength and safety of compact multi-functional excavating transporter devices.

Main Methods:

• Constructed a D-H coordinate kinematic analysis model for the backhoe loader.
• Developed a virtual prototype and discrete element material model using ADAMS and EDEM software.
• Performed coupled EDEM-ADAMS simulation to analyze load distribution and identify extreme working conditions.

Main Results:

• Optimized boom mass reduced by 13.80% (14.32 kg).
• Maximum stress decreased by 26.12% and total deformation by 29.11%.
• Compared to existing methods, equivalent stress and total deformation reduced by 18.76% and 22.27% respectively.

Conclusions:

• The proposed EDEM-ADAMS based optimization method effectively reduces backhoe loader boom mass and enhances structural performance.
• Optimized design offers significant improvements in structural strength and safety for extreme working conditions.
• This approach provides valuable insights for structural optimization of similar heavy machinery.